ABAP Select data from SAP table REG11 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP REG11 table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to REG11. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the REG11 table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_REG11 TYPE STANDARD TABLE OF REG11,
      WA_REG11 TYPE REG11,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <REG11> TYPE REG11.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_REG11.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM REG11
  INTO TABLE IT_REG11.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REG11
*  INTO TABLE @DATA(IT_REG112).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_REG11 INDEX 1 INTO DATA(WA_REG112).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_REG11 ASSIGNING <REG11>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REG11>-MANDT = 1.
<REG11>-MATNR = 1.
<REG11>-BAUFORMA = 1.
<REG11>-BAUFORMN = 1.
<REG11>-ZWGRUPPE = 1.

ENDLOOP.

LOOP AT IT_REG11 INTO WA_REG11.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REG11-EAGRUPPE, sy-vline,
  WA_REG11-VERBGL, sy-vline,
  WA_REG11-VERLOS, sy-vline,
  WA_REG11-BGLBIS, sy-vline,
  WA_REG11-BGLTXT, sy-vline,
  WA_REG11-LOSTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REG11 you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_REG11 TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_REG11 INTO WA_REG11.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_REG11-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REG11-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ZWGRUPPE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REG11-ZWGRUPPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REG11-ZWGRUPPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EAGRUPPE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REG11-EAGRUPPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REG11-EAGRUPPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOMGRP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REG11-KOMGRP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REG11-KOMGRP.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_REG11_STR, 
MANDT TYPE STRING,
MATNR TYPE STRING,
BAUFORMA TYPE STRING,
BAUFORMN TYPE STRING,
ZWGRUPPE TYPE STRING,
EAGRUPPE TYPE STRING,
VERBGL TYPE STRING,
VERLOS TYPE STRING,
BGLBIS TYPE STRING,
BGLTXT TYPE STRING,
LOSTXT TYPE STRING,
SPARTYP TYPE STRING,
UMBAUDAT TYPE STRING,
UMBAUGR TYPE STRING,
PLOMBDAT TYPE STRING,
HERSTELL TYPE STRING,
KOMGRP TYPE STRING,
ZSTROMP TYPE STRING,
ZSTROMS TYPE STRING,
ZSPANNP TYPE STRING,
ZSPANNS TYPE STRING,
UEBERVER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REG11_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_REG11_STR-MANDT sy-vline 
WA_REG11_STR-MATNR sy-vline 
WA_REG11_STR-BAUFORMA sy-vline 
WA_REG11_STR-BAUFORMN sy-vline 
WA_REG11_STR-ZWGRUPPE sy-vline 
WA_REG11_STR-EAGRUPPE sy-vline 
WA_REG11_STR-VERBGL sy-vline 
WA_REG11_STR-VERLOS sy-vline 
WA_REG11_STR-BGLBIS sy-vline 
WA_REG11_STR-BGLTXT sy-vline 
WA_REG11_STR-LOSTXT sy-vline 
WA_REG11_STR-SPARTYP sy-vline 
WA_REG11_STR-UMBAUDAT sy-vline 
WA_REG11_STR-UMBAUGR sy-vline 
WA_REG11_STR-PLOMBDAT sy-vline 
WA_REG11_STR-HERSTELL sy-vline 
WA_REG11_STR-KOMGRP sy-vline 
WA_REG11_STR-ZSTROMP sy-vline 
WA_REG11_STR-ZSTROMS sy-vline 
WA_REG11_STR-ZSPANNP sy-vline 
WA_REG11_STR-ZSPANNS sy-vline 
WA_REG11_STR-UEBERVER sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.